<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min='0'/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
        <!--
    v-show：是否显示上传组件
    :key：类似于id，如果一个页面多个图片上传控件，可以做区分
    :url：后台上传的url地址
    @close：关闭上传组件
    @crop-upload-success：上传成功后的回调
      <input type="file" name="file"/>
    -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss/uploadOssFile'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
  //引入teacher.js
  import teacher from '@/api/edu/teacher'
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'

  //export表示可以被别人调用
  export default {
    components: {ImageCropper,PanThumb},
    data(){
      return {
        teacher:{
          name: '',
          sort: 0,
          level: 1,
          career: '',
          intro: '',
          avatar: 'https://czy-edu.oss-cn-hangzhou.aliyuncs.com/AOTEMAN.jpg'
        },
        saveBtnDisabled: false, // 保存按钮是否禁用
        imagecropperShow: false, // 上传弹窗组件是否显示
        imagecropperKey: 0, // 上传弹窗组件key值
        BASE_API: process.env.BASE_API


      }
    },
    created(){

    },
    methods: {
      saveOrUpdate() {
        this.saveBtnDisabled = true
        this.saveData()
      },
      // 保存
      saveData() {
        if (this.teacher.name==''){
          this.$message({
            type: 'warning',
            message: '请填写讲师名称!'
          });
          this.saveBtnDisabled = false
          return
        }
        teacher.save(this.teacher)
          .then(response => {
            this.$message({
              type: 'success',
              message: '保存成功!'
            });
            this.$router.push({ path: '/teacher/teachers' })
          })
          .catch(error =>{
            this.saveBtnDisabled = false
          })
      },
      //关闭上传弹窗的方法
      close(){
        this.imagecropperShow = false
        //上传组件初始化
        this.imagecropperKey = this.imagecropperKey+1

      },
      //上传成功的方法
      cropSuccess(response){
        this.teacher.avatar = response
        this.imagecropperShow = false
      }
    }
  }
</script>

<style scoped>

</style>
